Dtttrt tp a hptmvt
uhir xl/in



. z DEFENSIVE PUBLICATIONT UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 O.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for '30 cents per sheet.

Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Office makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED APRIL 29, 1969 773 655 PROCESS OF SWEETEN IN G AND STABHLIZING SULFATE GRADE TURIPENTTNE Donald A. Maxwell and Bobby N. Scoggins, both Tennessee Eastman Cm, 19.0. Box 511, Kingsport, Tenn. 37662 Filed Nov. 5, 1968. Published Apr. 29, 1969 Int. Cl. C09f 3/00 US. Cl. 260-6755 No Drawing. 10 Pages Specification Process for sweetening and stabilizing sulfate-grade turpentine with a phenylene diarnine inhibitor such as N,N'-disecondary-butyl-paraphenylene cliamine, N,N-disecondary-butyl-ortho-phenylene diamine and mixtures thereof. The turpentine is mixed with 10150 ppm. inhibitor and 5-25% of 10-25 Baurn aqueous caustic. The mixture is agitated vigorously for 10-30 minutes, aged for 20-100 hours at 75-150 F., then separated. The hydrocarbon layer is an acceptable turpentine of good color, free of objectionable odor, and stable to oxidative deterioration. 

